Thank you for complete step and most easiest method you are using. I never regret of knowing this great Institute of Learning. Nevertheless, free fatty Acids determination was not done in this video
Thank you for your upload videos and I'm very interested to learn that teaching for easily understanding!!!!❤❤❤❤ I'm new for your channel and I will introduce my position to you!!! I'm one among chemistry student: 1. Under graduate, 2. Bachelor degree, 3. 4th year Thank you so much and I will follow you always !!!!!
MicroChem's Experiments people, I just saw your posts today and you are such smart, human angels for sharing your knowledge in such a simple and easy way to understand. Thank you so much! May God/Karma/Life blesses you and your loved ones today and always! Do you have any videos of how to prepare samples, standards, control, and blanks for ICP-OES? And how to do analysis with a GC and an UV? Thank you, you are appreciated!
Thank you very much for your appreciations. We do not have video for ICP-OES. In future, we will try to make video on it. We will upload video on GC soon. Stay with us.
I am microbiology test only analysis,but your video will help to learn Crude protein analysis,crude fiber and crude fat test is very easy and result is very good
Thank you soo much for such appreciation. We uploaded standard preparation for AAS. We. Also uploaded one video for GC and several video for spectrophotometer analysis. In future we will upload for ICP-MS too. Stay with us. Soryy for late reply.
Can I use this method to know bacterial acid value? And my lipid content of bacteria is. 0085gm then the procedure will be the same? Like 50 ml ethanol etc
Fats/oils don't dissolve fully in ethanol at room temperature but do dissolve at the boiling point of ethanol. For this test to be accurate, the oil needs to be fully dissolved in the ethanol, so the ethanol is heated to its boiling point to ensure the oil is all dissolved.
hello ..i have a doubt ....to get FFA in percentage wew have to use the same formula and also FFA does not have any unit....another question can i use formula for the estimation of FFA in Pearl millet flour..? kindly give me a suggestion...
Hi, thanks for the video. Why do we boil the ethanol-sample solution and what percent phenolphthalein solution are you using? Also, can I neutralize ethanol using KOH instead of NaOH? Thanks again!
NOTE: There is a mistake in the formulae of acid value, mentioned in this video, and the formulae for FFA is not given in this video. Both corrected formulae & calculations of Acid value and FFA are given below: *Acid value (as oleic acid) = 56.1×V×N --------------- W So, Acid Value (mg/g) = 1.6 *Free fatty acids (as oleic acid)= 28.2×V×N --------------- W So, FFA = 0.805 percent by weight
@@crayversace2804 AOAC method said to use 56.1 as the factor of this calculation for in both of the cases whether you use 0.1N KOH or 0.1N NaOH solution.
I did this today. If ethanol is not contaminated then it is already neutral. So you can skip the naturalization of ethanol. In today's practical I started titrateing ethanol. At 1st drop of NaOH, the ethanol turn dark pink (due to indicator) because it was already neutral.
When I needed to get Acid value in our laboratory for fats I used 0.1 N NaOH for titration , but when I calculated I multiple by 56.1 . our specification in our laboratory said that. Is that right?
But why ? Please give me the reason I think when you titrated with 0.1 NaOH you multiple by 40.001. so I said to my boss that our specification is wrong because we multiple by 56.1
Hello, I have some questions. What is the difference between normality and molarity? What is the purpose of standardizing the solution? Finally, why do we need to do the first titration of the ethanol?
1. You can find the difference between normality and molary from google. 2. Purpose of stadardization is to know the exact concentration of any solution. 3. Normally ethanol is slightly acidic. So first titration of ethanol is done to make the ethanol neutral as if it does not interfare the acidity of our oil sample.
Also, may I ask where you got the expected acid values from? I need a citation. Can you please also explain the formula in the calculation section? Thank you very much for your help. I appreciate it :)
@@mysticforest6345 Search on Google and find the reference value from journals and publications. You can also find it from countrys standard of that sample.
Yes. Standardization of NaOH is must. We didn't show the procedure of standardization in this video. We just mentioned that standardization is needed. We developed another video for the standardization of NaOH and already uploaded in this channel. Please find the video if needed. Thank you
Boiling of oil with ethanol will not facilitate to dissolve the oil completely. So no worries about it. Perform the test according to our video. You will get the accurate result.
When the sample is prepared you are boiling it, but my experiment wants to see the effect of frying on acid value so is it possible to do it in a different way to prevent boiling of the sample?
thank you for this clarifying experiment, i have a question, you used 10 g of oil, bcs i don't have enough samples what if i used only 2 g of oil, do i need to divide all mixtures by 5? Please reply me
Great video still have question when I want to measure the acid value of candelilla wax it starts to solidified in the middle of titration ? How to solve this ? And will it affect 9n acid value?
Irfan Ali, Thanks for your question. Yes adding Phenolphthalein twice is needed for this test. First time Phenolphthalein is added to carry out the neutralizing titration. Second time, it is added for the Acid Value determination titration. Both are needed because during boiling Phenolphthalein activity is lost in heat. So you have to add Phenolphthalein again before starting the Second & Final titration. We will try to upload a video for rancidity test very soon. Stay with us.
I did acid value today on hydrogenated vegetable oil as per USP method. United States pharmacopeia. They say to melt the sample (was in powder form) and add 100 ml of hot alcohol previously neutralized with NaOH, to phenolphthalein ts. Then add 1 ml of the indicator. How would you interpret this? Do I add the naoh to the alcohol first and then heat or do I add after heating? And the indicator after heating? Pls help. I think I messed up here somewhere so it didn't pass
Some measures of free fatty acids use KOH as the standard while others use NaOH. To convert from KOH to NaOH, multiply by 40/56.11. Likewise, multiply by 56.11/40 for the opposite conversion. This ratio is just the molecular weight of NaOH to KOH.
To be clear, the AOAC method uses KOH. If you're titrating with KOH, just use the KOH MW (56.11) instead of 40, and you'll have the right acid value according to the AOAC method.
hi is acid value depends upon the number of grams of fat taken. i take normally 1 gm of mustard oil to calculate ffa .what should be its range in that case
Kindly told me What is the procedure to Determine Free Acid, Total Phosphorus Pentoxide and Water Soluble Phosphorus Pentoxide Presents in Single Super Phosphate ??? It's Urgent
Ethanol always has some CO2 dissolved in it, and there can also be acetic acid or other volatile acids. You have to neutralize it first or else the acids already present will throw off your measurement.
It gives you a measure of how much of the fatty acids in a sample of fat/oil are free fatty acids, as opposed to being bound to glycerol as triglycerides. This matters for several reasons depending on the application - for instance, high free fatty acids can help oils to go rancid faster, or for biodiesel free fatty acids will be turned into soap, which will interfere with the process by forming emulsions or (if it makes it into the final product) damaging engines and fuel filters.
Different oils have different ranges and you need to adjust your sample weight accordingly. I work at a bioethanol plant that produces distiller's corn oil, which has a very high free fatty acid content (about 15-25). For this, about 0.5 g is appropriate. There's a chart early in the video that gives the right sample weight for different expected FFA concentration ranges.
I really love your easy methods. Please help with this question. Based on this method , my expected acid value is 15-75. Will it be right to use 0.5g of sample and 50 ml of ethanol?
It would help to add it to your flask. But ultimately it doesn't matter as long as it's totally dissolved in your ethanol before you do your titration.
Fats are normally in the form of triglycerides, with three fatty acid units connected as an ester to a glycerol molecule. Usually "fatty acids" in the context of a fat means all fatty acid units, whether bound as triglycerides or not. Free fatty acids means just the fatty acids that are not bound to glycerol, those that are just floating around "free" as R-COOH. Those are the only ones that are able to contribute to titrable acidity.
How to calculate the acid number of a mixture of oil? If i want the total mixture of oil is 10 gram and i have 2 oil with diffent acid number. One is 0,1 and the other 4. How much of each of these oils? Thank you
I'm assuming your method assumes you don't titrate your ethanol before you add the oil. If so, then you'll titrate the ethanol without oil and use this titre (mL after titration - mL before titration) as your blank. Then titrate the ethanol with the oil fully dissolved, and this titre will be your titration value.
1.Extract oil first from your sample. Then test the oil for FFA following this video. 2. Directly, take 20g sample in a flask and test as done for oil in this video
Thanks a lot such types of video uploaded. I see and saw your all video and i feel very happiness. Great wishes for you and your channel.
Thanks.
Thank you for complete step and most easiest method you are using.
I never regret of knowing this great Institute of Learning.
Nevertheless, free fatty Acids determination was not done in this video
Thanks.
Free Fatty Acid calculation is given in the description section. Please take a look
Tomorrow is my practical and it is helping me alot
From Pakistan
Glad to know
Same to you
Thanks My student is writing an IA n this it helped her to set the methodology
Thanks for sharing this
Thank you for your upload videos and I'm very interested to learn that teaching for easily understanding!!!!❤❤❤❤
I'm new for your channel and I will introduce my position to you!!!
I'm one among chemistry student:
1. Under graduate,
2. Bachelor degree,
3. 4th year
Thank you so much and I will follow you always !!!!!
Can we use 0.5%phenopthalein indicator??For av determination.
MicroChem's Experiments people, I just saw your posts today and you are such smart, human angels for sharing your knowledge in such a simple and easy way to understand. Thank you so much! May God/Karma/Life blesses you and your loved ones today and always! Do you have any videos of how to prepare samples, standards, control, and blanks for ICP-OES? And how to do analysis with a GC and an UV? Thank you, you are appreciated!
Thank you very much for your appreciations. We do not have video for ICP-OES. In future, we will try to make video on it. We will upload video on GC soon. Stay with us.
I am microbiology test only analysis,but your video will help to learn Crude protein analysis,crude fiber and crude fat test is very easy and result is very good
Thank you soo much for such appreciation. We uploaded standard preparation for AAS. We. Also uploaded one video for GC and several video for spectrophotometer analysis. In future we will upload for ICP-MS too. Stay with us. Soryy for late reply.
Very educating and simple too, but please how do I estimate the free fatty acid from the acid value dealing with Shea butter sample
Miss thanks for sharing, yours methods are so easy which helps easy understanding. Keep it up.
My pleasure 😊
Can I use this method to know bacterial acid value? And my lipid content of bacteria is. 0085gm then the procedure will be the same? Like 50 ml ethanol etc
No idea about your sample. You can try and let me know the results.
Thanks for sharing easy way to learn. Why you boiled the sample
For proper mixing of oil
Fats/oils don't dissolve fully in ethanol at room temperature but do dissolve at the boiling point of ethanol. For this test to be accurate, the oil needs to be fully dissolved in the ethanol, so the ethanol is heated to its boiling point to ensure the oil is all dissolved.
Only 2-3 drops of phenopthalein indicator is added what if we add 6-7drops.
Thanks a lot for your effort.
What is the range of acid value?
hello ..i have a doubt ....to get FFA in percentage wew have to use the same formula and also FFA does not have any unit....another question can i use formula for the estimation of FFA in Pearl millet flour..?
kindly give me a suggestion...
my keen request to post a video on lipase estimation by titration method for flour samples .....
Will try
How to avoid measuring mineral acids (e.g. sulfuric acid) and organic acids, only I would like analyze Free fatty acid content.??
Hi, thanks for the video. Why do we boil the ethanol-sample solution and what percent phenolphthalein solution are you using? Also, can I neutralize ethanol using KOH instead of NaOH? Thanks again!
NOTE: There is a mistake in the formulae of acid value, mentioned in this video, and the formulae for FFA is not given in this video.
Both corrected formulae & calculations of Acid value and FFA are given below:
*Acid value (as oleic acid) = 56.1×V×N
---------------
W
So, Acid Value (mg/g) = 1.6
*Free fatty acids (as oleic acid)= 28.2×V×N
---------------
W
So, FFA = 0.805 percent by weight
i have noticed in the early video, thank you for correction!
@@AriffMahtar Actually we did a silly mistake in the calculation. Please ingore it.
Isn't 56.1 the molecular weight for KOH.. And you used NaOH in the experiment
@@crayversace2804 AOAC method said to use 56.1 as the factor of this calculation for in both of the cases whether you use 0.1N KOH or 0.1N NaOH solution.
So what would the formula be if I used 0.1 KOH, 10 grams of oil, and had a titration volume of 0.76
I did this today. If ethanol is not contaminated then it is already neutral. So you can skip the naturalization of ethanol.
In today's practical I started titrateing ethanol. At 1st drop of NaOH, the ethanol turn dark pink (due to indicator) because it was already neutral.
Is it okay if im using methanol instead of ethanol?
No. That will be wrong
When I needed to get Acid value in our laboratory for fats I used 0.1 N NaOH for titration , but when I calculated I multiple by 56.1 . our specification in our laboratory said that. Is that right?
Right
But why ? Please give me the reason
I think when you titrated with 0.1 NaOH you multiple by 40.001. so I said to my boss that our specification is wrong because we multiple by 56.1
@@عبداللهمهيوب-ر3غ if you follow AOAC method, it is written that you have to use factor 56.1 whether you use KOH or NaOH
Something is not right I think formula molarity mentioned 40 but actual sodium hydroxide 28.2 is right
Corrected Calculation is given in the description section of this video
formula weight of NaOH is 40
Hello, I have some questions. What is the difference between normality and molarity? What is the purpose of standardizing the solution? Finally, why do we need to do the first titration of the ethanol?
1. You can find the difference between normality and molary from google.
2. Purpose of stadardization is to know the exact concentration of any solution.
3. Normally ethanol is slightly acidic. So first titration of ethanol is done to make the ethanol neutral as if it does not interfare the acidity of our oil sample.
@@MicroChemsExperiments So for every trial of this procedure, do I need to standardize the solution every time?
Also, may I ask where you got the expected acid values from? I need a citation. Can you please also explain the formula in the calculation section? Thank you very much for your help. I appreciate it :)
@@mysticforest6345 No. But standardize when you will analyze your sample on a different day.
@@mysticforest6345 Search on Google and find the reference value from journals and publications. You can also find it from countrys standard of that sample.
Thanks from your good video. I have a question. Can we use acetic acid 33٪ instead of concentrated by adding three times more acetic acid ؟
You do not need acetic acid in this experiment
How to find out free fatty acid value in cake mix?
Hi, do you know if I could use Isopropanol instead of Ethanol?
What is the unit lf the final value gotten. Is it in percentage or mgKOH/g
Why don't you show the standardization of NaOH in this video?..isn't it necessary?
Yes. Standardization of NaOH is must. We didn't show the procedure of standardization in this video. We just mentioned that standardization is needed.
We developed another video for the standardization of NaOH and already uploaded in this channel. Please find the video if needed. Thank you
@@MicroChemsExperiments ❤️
What is the difference between ffa value and acid value? And also mass of oleic acid is 282.5 so why 28.2?
Take help from Google for detailed explanation
Why do we put an equal amount of alcohol and ether when determining or performing for acid value?
We use 50ml of neutralized ethanol to dissolve the oil sample because AOAC method said so
After neutralizing ethanol just add to sample and titrate
Why boiling??
For melting, dissolving and mixing of oil with ethanol
But the molecular weight of naoh is nearly 40 so why we use 56.1 for acid value as you mentioned
You have to use 56.1 for both of NaOH and KOH
It will be same for rice bran oil??
@@lalitverma5279 yes
But the oil samples doesn’t mix after boiled
Boiling of oil with ethanol will not facilitate to dissolve the oil completely. So no worries about it. Perform the test according to our video. You will get the accurate result.
How to know whether the ethanol is dissolved or not because my solution always separated as ethanol and oil after i removed it from hot plate
No problem. During heating, acidic properties comes with ethanol.
How to find out the free fatty acids value of rice bran oil
Same method
Which indicator is to be used
Please help me out, how do calculate FFA from acid value dealing with shea butter sample
Follow the calculation given in the description section of this video
What you calculated in this video is acid value, is it the same with free acid value
When the sample is prepared you are boiling it, but my experiment wants to see the effect of frying on acid value so is it possible to do it in a different way to prevent boiling of the sample?
No. Boiling is needed for melting, dissolving and mixing of oil with ethanol. Boiling does not change the acid value significantly
Hi. Where can we get the official copy of this method? is it available online?
Not available at online. You can purchase from us. Write us at mail.mic.chem@gmail.com to purchase
Good day is there unit for the acid value ? due he did not write it
thank you for this clarifying experiment, i have a question, you used 10 g of oil, bcs i don't have enough samples
what if i used only 2 g of oil, do i need to divide all mixtures by 5? Please reply me
g is not enough for the analysis. Do the experiment using 10g.
Great video still have question when I want to measure the acid value of candelilla wax it starts to solidified in the middle of titration ? How to solve this ? And will it affect 9n acid value?
Keep the flask on hot plate while titration and use magnetic stirrer to agitate the solution.
Dissolve 1gram phenolphthalein indicator powder in 100 ml ethanol? Am I right
Yes right
Please Ihave a question, why did you heat the ethanol with sample and what is the time required to heat
Boiling is needed for melting, dissolving and mixing of oil with ethanol. Boil for 1 min
Can we use methylene blue instead of phenolphthalein? Then what are the procedures?
No. You can't
Thanks for the video. A question though,what about orange peel oil!? What procedure is useful?
This method is applicable for all kinds of oil sample.
@@MicroChemsExperiments thank you. About the standardization, how is it performed please? The steps weren't mentioned here.
Miss why are you adding phenopthline for twice?. Also requested share procedure for rancidity test with reference. Thanks.
Irfan Ali, Thanks for your question. Yes adding Phenolphthalein twice is needed for this test. First time Phenolphthalein is added to carry out the neutralizing titration. Second time, it is added for the Acid Value determination titration. Both are needed because during boiling Phenolphthalein activity is lost in heat. So you have to add Phenolphthalein again before starting the Second & Final titration.
We will try to upload a video for rancidity test very soon. Stay with us.
Thanks a lot..but i have a question, this method is also applicable to virgin coconut oil
Yes.
Pls make a video on tannin in tea
Noted
Hi. Im iranian chemist, why heat erlen before titration? Your erlen contain oil , it leads to increase acid value
AOAC method describe in this way of heating
Whats the procedure for groundnut oil ?
Same procedure will be applicable for groundnut oil sample.
How to find expected Acid value ???
Search on google, find from journals, international specifications and standards (Indian standard)
Can use this method for detect FFA in milk or milk product?
Yes.
Please what is the implication of Acid value on oil quality?
The higher the acid value and free fatty acid content, the lower the quality of the oil
i wanna ask, we do the titration while the mixture is still hot or not?
Son of snitch, do titration while it is hot.
Can you please provide a documented file or article of the procedure ?
Sorry. We don't provide any document.
I did acid value today on hydrogenated vegetable oil as per USP method. United States pharmacopeia. They say to melt the sample (was in powder form) and add 100 ml of hot alcohol previously neutralized with NaOH, to phenolphthalein ts. Then add 1 ml of the indicator. How would you interpret this? Do I add the naoh to the alcohol first and then heat or do I add after heating? And the indicator after heating? Pls help. I think I messed up here somewhere so it didn't pass
Do as done in this video
Sir i have a question . Is there any machine available to check moisture for ghee?like the BR check machine .
You can use general moisture analyzer
Thank you for this video. I want to ask, if we use KOH as the titrant, definitely the formula will will take molecular weight of KOH?
Some measures of free fatty acids use KOH as the standard while others use NaOH. To convert from KOH to NaOH, multiply by 40/56.11. Likewise, multiply by 56.11/40 for the opposite conversion. This ratio is just the molecular weight of NaOH to KOH.
To be clear, the AOAC method uses KOH. If you're titrating with KOH, just use the KOH MW (56.11) instead of 40, and you'll have the right acid value according to the AOAC method.
Yes, absolutely
hi is acid value depends upon the number of grams of fat taken. i take normally 1 gm of mustard oil to calculate ffa .what should be its range in that case
You should take 10g sample
Kindly told me What is the procedure to Determine Free Acid, Total Phosphorus Pentoxide and Water Soluble Phosphorus Pentoxide Presents in Single Super Phosphate ??? It's Urgent
Noted. We will develop video later
Please tell me that the determination of Acid value with FFA is different?
Please read the description section
or do we need to wait until the mixture is cooled down to room temp?
Son of a Snitch, you have to carry out titration when the misture is hot.
@@MicroChemsExperiments noted. thank you🙏🏻
Son of a snitch means?
Good video, Pls unit for acidity is missing.
Acid value does not have any unit. It is a value without unit like pH.
why must to neutralize ethanol with sodium hydroxide?
Neutralisation of ethanol is needed to avoid acidic influences in the titration which may give incorrect titration readings.
Ethanol always has some CO2 dissolved in it, and there can also be acetic acid or other volatile acids. You have to neutralize it first or else the acids already present will throw off your measurement.
Thanku so much Mam Acid value of oil experiment ke liye🙏🙏🙏🙏🙏
Can you please explain what is acid value and why we determine this?
It represent the quality of oil. For more, study with the resources of google
It gives you a measure of how much of the fatty acids in a sample of fat/oil are free fatty acids, as opposed to being bound to glycerol as triglycerides. This matters for several reasons depending on the application - for instance, high free fatty acids can help oils to go rancid faster, or for biodiesel free fatty acids will be turned into soap, which will interfere with the process by forming emulsions or (if it makes it into the final product) damaging engines and fuel filters.
from your test how can i measure the amount of insoluble matter in alcohol amd water
It is not the test method for insoluble matter in alcohol and water.
Dear, please perform Euric acid in Rapeseed meal oil.
This need GC-FID method. We will make video later
Thanks a lot,
Pls peovide FFA method & It's calculation
This video is also applicable for FFA test. Just FFA calculation is different. FFA calculation is given in the description section of this video.
What is the maximum value of ffa for a good oil...?
Different oils have different FFA value. Search on google to get idea about the reference ffa value of an oil sample
Every oil acid value ranges from 1-4 if we take 10 gm oil or different oil has different ranges ?
Every oil has the same range
Different oils have different ranges and you need to adjust your sample weight accordingly. I work at a bioethanol plant that produces distiller's corn oil, which has a very high free fatty acid content (about 15-25). For this, about 0.5 g is appropriate. There's a chart early in the video that gives the right sample weight for different expected FFA concentration ranges.
I really love your easy methods.
Please help with this question. Based on this method , my expected acid value is 15-75.
Will it be right to use 0.5g of sample and 50 ml of ethanol?
Yes. Do it
Sir can I use distilled spirit ,.......to place of ethanol......
No. You have to use ethanol
But I also use solvent ..........
If my sample is margarine (is solid) do I need to melt it first before proceeding with titration?
It would help to add it to your flask. But ultimately it doesn't matter as long as it's totally dissolved in your ethanol before you do your titration.
Correct
Can you give me the "Determination of Oil Analysis" manual if I need it?
No sir. No documents will be provided
How to do solid sample like mixes for free fatty acid procedure tell me
Take 10g of crushed and mixed sample and do the same as done in this video.
Please I need from you to give me the updated AOAC method If you have
Sorry, we don't provide any document
Pls share the procedure of Active content of Detergent & liquid
Soon
for 1 gm sample a cid value range expected ?
Find from google
What is unit for acid value, and you didn't also show the calculation of free fatty acid
Please find the corrected calculations with unit from pinned comment. Thank you
Why added ethanol in sample
AOAC method said so
Can we use petroleum ether in place of ethanol
No
How we determineffa as palmitic acid in oil
..
Need to analyse your sample in GC
Procedure is same but in calculation add palmitic acid factor irrespect to oleic acid
What was the actual temperature of the Hot Stirrer during heating the sample with the neutralizing Ethanol? Thanks for your prompt feedback.
You need to heat just at the boiling point of the ethanol. May be at 80 degree Celsius.
@@MicroChemsExperiments thank you very much!!!
@@AshishKumar-rf5tv you are welcome Sir
Pls provide calculation of FFA as virgin coconut oil
Please follow the calculation given in the NOTE in pinned comment. Same calculation is applicable for all kinds of oils and fats samples.
Thanks for those videos❤️🔥❤️🔥
You are welcome
Hi
Can you please tell me
What is the difference between fatty acid and free fatty acid?
Fats are normally in the form of triglycerides, with three fatty acid units connected as an ester to a glycerol molecule. Usually "fatty acids" in the context of a fat means all fatty acid units, whether bound as triglycerides or not. Free fatty acids means just the fatty acids that are not bound to glycerol, those that are just floating around "free" as R-COOH. Those are the only ones that are able to contribute to titrable acidity.
Yup
Hi.! Is it ok if I use 99% Isopropyl alcohol instead of ethanol.?
Thank you so much for this video.. I can finally test out the oil quality in our current study..
If not.. Can I use 95% ethyl alcohol for this.? Please notice..😭
Isopropyl alcohol should not be used but you can use 95% ethyl alcohol
Pls share me the assy test of Titanium Dioxide
Ok
Will be delay?
@@SohelRana-ln7bg yes. Because we don't have titanium dioxide at this moment in our lab.
Ok,pls try asap
@@SohelRana-ln7bg sure
How to calculate the acid number of a mixture of oil? If i want the total mixture of oil is 10 gram and i have 2 oil with diffent acid number. One is 0,1 and the other 4. How much of each of these oils? Thank you
Sorry we are unable to explain for oil mixture.
What does blank value and titration value in the calculator mean ?
Your question is not clear
I'm assuming your method assumes you don't titrate your ethanol before you add the oil. If so, then you'll titrate the ethanol without oil and use this titre (mL after titration - mL before titration) as your blank. Then titrate the ethanol with the oil fully dissolved, and this titre will be your titration value.
W stand for the weight of sample right?
Yes.
hello can i measure acid number of naphthenic acid in dodecane using this method?
Not sure about that...you can try
@@MicroChemsExperiments how about the phenolphthalein solution? it is mix with few percent ethanol
but my oil is mixed with solvent 50% toluene, 49.5% isopropanol, 0.5 water. is the phenolphthalein solution valid to flow the color?
Thanks so much
Maam
For giv6
In detail knowledge for us
You are most welcome.
Hi dear i have a question. all oil or dalda cooking oil what is calculation
Same calculation
Thanks a lot for sharing this very informative video. I have a question, can I replace EtOH 96% or 70% instead of 99%?
You can use 96% but not 70%
Can you explain why you perform this test
After dissoLving 4gm in900ml we added 96ml d.w?
No. we added an amount of DW which is needed to make the final volume of 1000ml.
May I know how long did the oil sample+ neutralized alcohol took to boil?
It depends on the temperature you applied. Time doesn't matter, you just need to boil. That's all.
Hi can you do free acid test for honey sample? thanks
Yes. You can
how can i check FFA in rusk?
1.Extract oil first from your sample. Then test the oil for FFA following this video.
2. Directly, take 20g sample in a flask and test as done for oil in this video
By using acid value how to calculate %ffa 🤔
Given in the description section